DC Motors In D.C. machines the residual magnetism is of the order of 10 to 15 percent 2 to 3 percent 50 to 75 percent 20 to 25 percent 10 to 15 percent 2 to 3 percent 50 to 75 percent 20 to 25 percent ANSWER DOWNLOAD EXAMIANS APP
DC Motors A dc motor can be easily identified by Commutator Winding Size of conductor Yoke Commutator Winding Size of conductor Yoke ANSWER DOWNLOAD EXAMIANS APP
DC Motors Small dc motors up to 5 HP usually have 2 poles 4 poles 8 poles 6 poles 2 poles 4 poles 8 poles 6 poles ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a D.C. shunt motor, under the conditions of maximum power, the current in the armature will be Less than full-load current Rated full-load current More than full-load current Almost negligible Less than full-load current Rated full-load current More than full-load current Almost negligible ANSWER DOWNLOAD EXAMIANS APP
DC Motors Three point starter can be used for Shunt motor only Series motor only Both shunt and compound motor Compound motor only Shunt motor only Series motor only Both shunt and compound motor Compound motor only ANSWER DOWNLOAD EXAMIANS APP
DC Motors If a D.C. shunt motor is working at no load and if shunt field circuit suddenly opens This will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses Nothing will happen to the motor Motor will run at very slow speed This will make armature to take heavy current, possibly burning it This will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses Nothing will happen to the motor Motor will run at very slow speed This will make armature to take heavy current, possibly burning it ANSWER DOWNLOAD EXAMIANS APP
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